but boeing says, hey, every new commercial plane experiences a few growing pains. not unusual. and despite the review, both the manufacturer and government insist the innovative aircraft is safe. >> we are confident about the safety of this aircraft. but we're concerned about these incidents and we will tuck the re-- we will conduct the review until we're satisfied. >> no planes will be grounded during the time of inspection. >>> expect some extra delays at sfo this weekend. starting tonight at 10 p.m., through monday morning at 8 a.m., crews will be closing down one of the runways to work on extending it. airport officials say this will most likely affect west coast flights. travelers could see delays of anywhere 30 to 45 minutes. >>> new at 6:00, if the governor has his way, not all schools will be created equal. he is proposing a major change to the way the state distributes money. cbs 5 political reporter grace lee on this fundamental shift in school funding. grace. >> reporter: liz, the way it worked in the past is that money has been given out by the state. they said how